package com.xh.bgc.util;

public class RadomNumber {

	public static String getRandom(){

		StringBuffer sb = new StringBuffer();
		for(int i =0;i<4;i++){
			int j =(int) (Math.random()*10)  ;
			sb.append(j);
			
		}
		
		return	sb.toString();
	}
	
    	public static void main(String[] args) {
		
			System.out.println(getRandom());
		}
}
